Final answer:
The data appears to follow an exponential distribution, with the mean and standard deviation being the most appropriate measures of center.
Step-by-step explanation:
The data appears to follow an exponential distribution. In an exponential distribution, the mean and standard deviation are equal to each other. So, based on the shape of the data, the most appropriate measure of center would be the mean or average. The mode and median are not commonly used in an exponential distribution.